Application of powderly poly-unsaturated fatty acid to fish meal.

我们提出了一种新的方法，以环糊精(CD)为干粉，在双螺杆捏合机上将十二碳六烯酸三甘油三酯(DHA油)或欧米伽-3多不饱和脂肪酸(PUFA)酯与环糊精(CD)进行络合。在反应工程的基础上对粉末的氧化速率进行了研究。在此基础上，将DHA油包结物粉末作为功能性海鲜糊料应用于鱼粉的制备中。研究结果如下：1.n-3液体PUFA酯的氧化反应动力学随氧化程度的不同呈现自催化反应和一级反应两种反应模式。另一方面，n-6液体多不饱和脂肪酸的氧化是自催化进行的。此外，DHA油氧化符合零级反应动力学。用X射线衍射法、气相色谱和薄层色谱法测定了CDS中PUFA酯或DHA油的摩尔比(包合分数)。DHA油的包合分数与DHA酯的包合分数相同，与CD的种类无关。核磁共振测试表明，酯部分包含在CD的分子腔中。粉状EPA食用者和DHA甘油三酯都表现出对自氧化的显著抵抗。还观察到碳水化合物可以用来进一步保护PUFA环糊精包合物免受氧化。包合物粉末表现出显著的抗自氧化能力，特别是当包含在α-CD中时。在4ﾟC下，在没有任何抗氧化剂的情况下，粉状鱼粉油的POV值保持在30以下20天。

We have proposed a novel method for complexing of the docohexaenoic triyglyceride oil (DHA oil) or the omega-3 polyunsaturated fatty acids (PUFA) easter with cyclodextrin (CD) as dry powders by a twin-screw kneader. The oxidation rates of the powders were inverstigated on the basis of the reaction engineeing. Further, the inclusion complex powder of DHA oil was employed in the preparation of fish meal as a functional sea food paste. The results are as follows :1. The oxidative reaction kinetics of the n-3 liquid PUFA esters exhibited two kinds of reaction modes ; the autocatalytic reaction and 1st order reaction, depending on the degree of oxidation. On the other hand, the oxidation of n-6 liquid PUFA progressed authocatalytically. Further, the DHA oil oxidized according to 0th order reaction kinetics.2. The molar ratio (inclusion fraction) of PUFA ester or DHA oil included in CDs was measured by X-ray diffractogram, gas chromatography, and TLC method. The inclusion fraction of DHA oil was the same as DHA ester, independent of the kind of CD.NMR measurements showed that the ester part was included in the molecular cavity of CD.3. Both the powderly EPA eater and DHA triglyceride exhibited a marked resistance against autoxidation. It was also observed that carbohydrates could be used to further protect the PUFA cyclodextrin inclusion complexes from oxidation.4. The inclusion complexed powder exhibited a marked resistance against autoxidation, particularly when included in alpha-CD.The POV value of powdery DHA oil in fish meal paste remained less than 30 for 20 days without any antioxidants at 4ﾟC.